Valve for outlet-ports.



N. 7. PATENTBD DEG.19 1905.

808 03 H. L. GILBERTSON.

VALVE FOR OUTLET PORTS.

APPLICATION FILED JUNE 30,1904.

MX 8 x E IE 8 I4 H 13/ WWAM,

HANS L. GILBERTSON, OF ST. PAUL, MINNESOTA.

VALVE FOR OUTLET-PORTS.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Anplicatinn lile June 30,1904. Serial No. 213,270.

To all whom, it nuty concern.-

Be it known that I, HANS L. GILBERTsoN, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Valves for Outlet- Ports, of which the following is a specification.

My invention relates to improvements in valves or gates for outlet-ports, and is designed more particularly for use upon icecream freezers and similar vessels where the valve is arranged upon the outside of the vessel. Its object is to provide a simple and easily-operated valve which shall securely seal the discharge-port and lock itself automatically in port-opening position.

T 0 that end my invention consists in the construction, combination, and arrangement of parts hereinafter described and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 is a front view of the improved valve in place upon a vessel, showing the valvein open position.

.Fig, 2 is a vertical section on line a; as of Fig.

1, and Fig. 3 is a front view of the valve alone in closed position.

In the drawings, A represents the side wall of an ice-cream freezer or other vessel formed with a threaded outlet-port B. The valve comprises a tubular wedgeshaped valve-seat C, open at top and bottom, and a similarlywedge-shaped plug D, shaped to fit closely within the valve-seat. The valve-seat has at the rear a centrally-disposed tubular neck 2, opening into the valve-seat through the rear wall 3 and externally threaded, whereby it may be screwed into the threaded outletport of the vessel. The front wall 4 of the valve-seat is preferably formed with an opening 5, registering with the bore of the neck, whereby suitable instrumentalities may be inserted into the neck to clean it or remove obstructions. The valve-seat and neck are preferably made in one integral casting or piece to avoid leakage through a oint.

The plug D is preferably made of soft rubber or other resilient waterproof material, so that the wear upon the plug or its seat or any inexactness in shaping or roughness in finishing them may be taken up by the resiliency of the material and the expense attendant upon carefully finishing the contacting surfaces be avoided.

The plug has sliding support upon the side of the vessel by means of an upwardly-extending handle E, passing slidingly through the guide-loop 7 upon the side of the vessel above the valve and engaging the guide when the plug is raised. The handle consists, preferably, of a wire or strip of spring metal bent upon itself to form a spring-loop 8 at the top, which serves also as a finger-loop. One portion 9 of the wire extends down through the guide-loop to the plug, to which it may be secured in any suitable way. In the drawings it is shown passing entirely through the plug and secured thereto by a supporting head or flange 10 beneath the plug and a flange 11 above the plug. The other wire portion 12 extends down through the guide-loop along side the portion 9, but is sprung outwardly therefrom. Near its end it is bent first inwardly toward the other Wire portion 9 and then outwardly to form a hook or notch 13 to receive the side of the guide-loop 7, the guide-loop being of such width only that the wire portion 12 in passing throu h it will be forced inwardly against the resiliency of its spring until the hook is reached, when the wire 12 will spring outwardly and throw the hook into locking engagement with the loop.

When the valve is in port-closing position, the plug will stand lowered or thrust down within the seat is, as shown in Fig. 3, with the sprin loop 8 above the guide-loop 7. When the plug is raised to open the valve, the spring wire portion 12 will be forced inwardly until the hook 13 is brought opposite the guideloop, when the hook will snap outwardly into lockin engagement with the loop. It will be noticed that the guide-loop is positioned at such height above the valve-seat that the lower end of the plug will not be drawn entirely out of the seat. When it is desired to lower the plug into port-closing position, the handle is merely pressed down until the hook is cammed inwardly by the engagement of its curved or slanting upper side 14 with the side of the loop, when the plug will drop by gravity into its seat, into whlch it may be further thrust by pressure. The greater the downward pressure the tighter it will be forced against the mouth of the outlet-port.

The term Wire is used herein to cover generically any metal strip of Whatever shaped section which will operate in substantially the manner described.

guide and comprising two spring-connected portions, a plug-supporting portion, and a locking portion, the locking portion being bent near the bottom into position to engage and be intercepted by the guide, whereby the plug is held in lifted position.

2. The combination, with a vessel having a lateral outlet-port, of a tubular wedgeshaped valve-seat and a plug seating therein, a guide-loop arranged above the port, and a handle for the plug having sliding engagement with the guideloop and consisting of a piece of wire bent upon itself to form a springloop, one portion of the wire passing down and supporting the plug, and the other portion being bent at the end into position to engage and interlock with the guide-loop When the plug is raised.

3. The combination, with a vessel having a lateral outlet-port, of a tubular wedgeshaped valve-seat having an opening in its rear wall registering with the port, a wedge shaped plug slidable therein, a guide carried by the vessel above the port, a handle for the plu having sliding engagement with the gui e and having means for automatically interlocking with the guide when raised to hold the plug in lifted position.

4. The combination, with a vessel having a lateral outlet-port, of a tubular wedgeshaped valve-seat and a wedge-shaped plug seating therein, a guide-loop secured upon the vessel above the valve-seat, and a handle for the plug comprising two spring-connected portions, a plug-supporting portion and a locking portion, both of said portions passing through the guide-loop, the locking portion being held normally in outsprung position but being forced inwardly in passing through the loop, said locking portion having at the bottom an inwardly-bent hook in position to spring into locking engagement with the guide-loop when the plug is raised.

5.. The combination, with a vessel having a lateral outlet-port, of a tubular wedgeshaped valve-seat and a plug seating therein, a guide-loop arranged above the port, and a handle for the plug consisting of a piece of wire bent upon itself to form a spring-loop at the top, one portion of the wire passing down and supporting the plug and the other portion being sprung divergently therefrom and being formed with a hook to interlock with the guide-loop, both portions of the wire passing through the guide-loop, for the purpose set forth.

In testimony whereof I afIiX my signature two witnesses.

EMILY F. OTIS. 

